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Non-linear dynamic behavior of a Rubber-Layer Roller Bearings (RLRB) isolator

  • N. MengaEmail author
  • F. Bottiglione
  • G. Carbone
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

In this paper we investigate the frictional and dynamical behavior of a Rubber-Layer Roller-Bearings (RLRB) isolator, for seismic and mechanics applications. By studying the viscoelastic contact mechanics of the rollers with the rubber layer, we determine the non-linear viscoelastic damping of the device. Further, we investigate the dynamic behavior of a two degrees of freedom vibrating system equipped with the RLRB isolator. Results are compared with an ideal linear system with similar dynamic parameters. We show that, thanks to the non-linear viscoelastic behavior of the base isolation device, smaller amplification factors and transmitted forces can be achieved, compared to the case of linear damping. Since such a result can be of crucial importance in several real-life applications, such as seismic engineering and mechanical noise and vibration control, we hope this early work will boost the interest in the field of non-linear viscoelastic damped systems dynamics.

Keywords

non-linear dynamics viscoelasticity RLRB isolator 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Dept. of Mechanics, Mathematics and ManagementPolitecnico di BariBariItaly

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